System of concentrating sulphuric acid



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A. A. VINEYARD SYSTEM oF CONCENTRATLNG SULPHURIG Aem Filed Sept. 9. l

G v 1,596,907 A. A. VINEYARD' Y SYSTEM OF CONCENTRATING SULPHURIC ACID Filed Sept. 9. 1925 y 4 Sheets-Sheet 2 GGGG 4CDCDCDOG@ @CD @CDG 4 shams-sheet s l A. A. VINEYARD SYSTEM 0F CONCENTRATI-NG SULPURIVC ACID Filed Sept. 9. 1925 y Au@ 24, 1926.

A. A. VINEYARD SYSTEM 0F' CONCENTRATING SULPHURIC ACID Filed Sept 9. 1925 4 Sheewhzw:

Aug. 24 i926.

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, 4 ARTHUR yA. TINEYARD, OF WOODRIVIER, ILLINOIS.

gli, 'GF CN'CENTRATING, SULPHURIC ACID.

Application aided September 9, 1925. Serial No. 55,324.

rel to systems 'lor coni sulnh t, acid. and particularly artis for this purpose whereby i has been used lor; eil refining, sludge acid, or Weak acid may be eencentrated or recovered, the method 'ufhereby e refining the subject matter or pencii plication tiled by me on November 27, Serial No. 71,703 as e. division of this present appiieation.

The general ohgcet of this invention is to provi i 7.-, an acid concentrating system including rneans Where-h a weak acid may be lirst to the a on of heat and then disdnirgeci into a. ating' and vapor releaschanibeni e therein being sub4 ted to thejsetien of jets compressed lThis invention Sli ' air te cause the agitation ot' ythe acid and the liquid being' allowed to llow vinto settling 'tanks Whiie the i. .por and gases which are released this chamber from the heated seid are carried oli to a condenser, and to provide a strong acid eoncentrator into which the liquid esiti in theA settling tanks is carried, wherein the acid is submitted to the ect-ien of heat to 'again discharge vapor therefrom, the TJapor beingcarried back to said condenser and thence, again discharged as liquid unf-til a maximum amount ot securede v further object is 'to provide a system ot 'this character which thoroughly ell'ective, which will secure a maximum amount ol strong and concentrated acid, which is relativeiy cheap tc- ;.rate, and which is thoroughly ehiectiv'e in practice.

liiy inventionV is illustrated in the accompanying drawings, wherein Figure 1 is a diagrammatic View in section showing the sei/ral elements of my concentrating system;

Figure 2 is a. vertical section of the agitaling chamber;

Figure 3 is a top plan View ci. the condenser;

Figure 4; 'is a section on 'the line 4-4 of Figure i Figure 5 is longitudinal sectional View through the hes-ting chambers showing the heating pipes and concentrating stills;

.Figure 6 is 'op plan view et the structure shown in Figure 5;

eiegure "1' is :mnt sieve-tion oit the preacid has been into the strong1 acid concentrator ychamber l5 passes, D the condenser' into which the vapor from the chamber B passes and by which this vapor is condensed, E the strong acid conccntrator, and F the heater lor healing the acid passing Afrom the settliiw tanks inte the strong acidconcentrator.

Leterrinc' now to .Figure 8, it Will be seen that the heater fr comprises a lire-brick heatingl chamber lO'haVing the lire-box 11 at its lower end and having a ilue outlet 12.

generally speaking, the G0 Extending' through` this chamber are a plu- 75 rality ot pipes 13. These are leudlined iron pipes or other acid-resisting metal formedl with returned bends 14 so that the acid will llow continuously l'rom the discharge inlet 15 to the discharge outlet 1G. This chamber 10 may be ,heated by inc-.ins ot' oil or any other `suitable heating' means beneath the series of pipes, it beings desirable, of' course, to ret the greatest el'liciency possible. It

will be noted that the flanges 17 of`the ria-m35 turned bends al, cach end of the pipes 123 are outside of the furnace wall. This prevents meltingv ot` lhe ilanges in the intense heat of the furnace. Passing' through the furnace Y below the series ot' pipes 13 is a compressed air pipe 18. l

The outlet 1G leads i'rom this pipe series into the chamber li, which is the neil-ning or gas-releasinlgy clnnnber. This is constructed of an outside shell ot' lead 19 lined with an acid-proof brick and cement 20 on its entire inside surface, bottom, sides und arch. The air pipe 18, which air vpipe where it enters the agitatinglehamber is made of Duro iron or other acid-resisting' metal, has a number of airets within the chamber whereby the heated compressed air may be discharged upward through the liquid which partially fills the chamber. The discharge of the heated air upward through the liquid acts to thoroughly agitate the liquid, breaks up organic matter, and helps to release gases from the acigLdBreaking up the organic matter tends to preventretairding of the i 2l which leads into the Iirst settling .entirely exteriorly oi' lurelit of relativeiv loro@ moet: 38.

.V .v e i Extending from the chamber .is the j C and from a point adjacent 'the top s settling tank leeds e pipe 22 .into the next "thu, he settling tank of the series, sind so on. The e ,nds o( h 'to the coIA organic matter is removed lhy skimming in et pipe from the top: or after the acid has been Thus. drawn oil. through the bottom. The tlng tank may he ied and the organic matter carried of(i into sewer hy :a hase. f there is no organic metter in large quantities in the acid there is no necessity o carrying the acid from the chamber in to the settling tank but it may he carried directif7 to the strong acid coneem'zrtorx Leading from the top of the and vapr-releasing chamber' is a veiporout let pipe. This pipe ieeds into the ecndenser D. This consists of en outer Wooden jacket 24 lined with e lead tenir m11 dlsposed within this .leed teni: is f;- ehe` 26 of lead. The vapor inlet p pe 23 Tezze( through 'the 'Wall of the Condomi. and into this shell 2G end dis vapor therein. This sheii 2S is e. rounded by Water con end fed thereto hy Passig vertically throne' passages 2S, the Wells c,

and through which de water circulates so that the 'vapor Within densing tank is cohtinuzilij suhmes the cooling action of Witter. From the e of th\is shell opposite the iniet pipe 23 an exit pipe 29, while fom one end shell and leading downward through t bottom of the Water tank is en eeid dr outlet 30. Leading 'from the het"o the tanl'zis :it Water outlet it from the settling tenir C or the eco directly from the Chamber B, iff hc s tanks are used, passcs into e )ipe thence into :i leed lined pipe that i harhwnrd and forward h3. zi seri-es volutionfs through za4 heating chai'ihe in the irehox i?.

lt Will he noted here, again, that 'the flanges of the returned hends at euch v. of the convoluted line of pipeere dis :.lei; h the forward and walls of this heatingehnmher. The pipe 33 ai'ter it passes through the heating chem@ her extendsthrougrh the forward Wall thereot' and then extends laterally in the ferm a header 3G and from this header 36 a. plurality of disehzirge pipes 37, these piper; ertei'idinfrA forwardly and downwardly and discharging' into theuptprned ends oie-i l LJET,

essere plpes 38 are of iron, Duro i; sicidere-sistingF metal pipe, These are dny posed within the chamber E and swim ized to the artion ot heut from im oil. hn. 39 or other heatingn means.

The forward end of each pipe ber passes, a ndenser into which from the agitatlng chamber passes,

,neced pipe @miens-passing brick and forth across said hmbs, tha 'pipe sec ons conmtad by ebows dlsposed @xterm-ny of .hsvwa mi Sad chamber; an agltatmg chamba? into Whchth iquid is discharged.,

a compressed aiii pipe/passing through the preheamg cmuber zmnavmg a pmahq gets ischmgmg ms@ th@ 'uquni m Ehe .'agtatng chamba?, a settling tank Y into which the quiv 'mm the agtaing the vapor he can. enser having a lquidoutet, s, mam

Series cmmate pipes extending; back "forth acmss sam. chamber throlwh winch mnnected pipes the liquid passes, a series h@ vapor mzes of sul?. of the bilis 'being having; one and exendng upwa., ne pipes into '551e upwardly extending and of each gti, ,means for 'heat-ing the qu. dschmged tholgh. saidA pipes into the ss? a -.sfae pipe axtnng domi 'vmf :5mm the; @posits and of the. stdy and mp0): gape I Qadng rom 'me opposite and il' h@ sti m extendixg 'upwa r Means 01 conczmmwng Weak sulphurc aciiuslung W10 Ahatg; cham bars, a series sb is amending across one' h ziiw Cmmbe "ld tuough the was 'hvreoiix, one and 3f-' achsl ming amended le v2:3310@n-g in a ci''cutou said heating Chambon" and at s ends exmninw' from fue wall thereof, and.l farmer?, im ivm afleucer having pipes discharging inte zhe upturned ends of each of said stlsi the opposite and of each still beng-pmvded with zs'liqald discharge .and a vapor oute.,

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